keats



L Ah e e h S 5 .Ta 6 e h S 3 S m Am m M M E E 0% 0&8 J a d 0 M o W No. 437,857. Patented Oct. 7, 1890.

mm n ll, ml

Wu llllll ll Q llllmil J 0 M m w (No Model.)

J. & G. H. KEATS.

SOLE TRIMMER.

Patented Oct. 7, 1890.

W77 72 0am Mm 3 Sheets-Sheet 2.

XKM? W (No Model.) 3 Sheets-Sheet 3.

J. 85 O. H. KEATS.

SOLE TRIMMER. 7 No. 487,857. Patented Oct. 7, 1890.

UNITED STATES PATENT OFFICE.

JOHN KEATS AND CHARLES II. KEATS, OF STAFFORD, ENGLAND.

SOLE-TRIMMER.

SPECIFICATION forming part of Letters Patent No. 437,857, dated October 7, 1890.

Application filed July 2, 1889. Serial No. 316,333. (No model.) Patented in England February 25, 1887, No. 2,968, and in France April 1, 1887, No. 182,583. r

To all whom it may concern.-

Be it known that We, JOHN KEATS and CHARLES HORATIO KEATS, both of 4.1 Gaol Road, Stafford, in the county of Stafford, England, have invented certain new and useful Improvements in Compound Cutters for Paring the Soles of Boots and Shoes, (for which we have obtained English Letters Patent No. 2,968, dated February 25, 1887, and a French Brevet dlnvention No. 182,583, dated April 1, 1887,) of which the following is a specification.

The object of this invention is so to 0011- struct the compound rotary cutters of boot or shoe sole paring machines as, first, to obtain a uniform depth of cut from the profile or peripherical cutters, notwithstanding the wearing away of their cutting-edges, and, sec ondly, to provide for the adjustment relatively to the profile-cutters of the charnfering or face cutter to suit the Work in hand whether the paring-machine be running or quiescent.

In the accompanying drawings the compound cutter is shown complete in side View at Figure 1, and in front view at Fig. 2; and Fig. 3 is a longitudinal section of the same, taken in the line 1 2 of Fig. 2. Fig. 4 shows in side view, and Figs. 5 and 6 in front and back views, the profile-cutter holder detached, its cutters being in place. Fig. 7 is a side View, and Figs. 8 and 9 front and back views, of the chamfering-cutter holder detached, its cutter being in place. Figs. 10 and 11 show, in longitudinal section and front view, a modified construction of the profile-cutter. Figs. 12 and 13 show detached and in front and edge views, the hitting-cutter or welt-plow, forming also a guide. Figs. 14 and 15 show, detached and in front and edge views, the rotary ventilator-guard for carrying the guiding hitting-cutter. Fig. 16 shows,in edge view, the hitting-cutter guide fitted to its guard in the posiltion it occupies when operating on a boot- The compound cutter consists of three sets of cutting-edges-viz., one set for profile-cutting, one set for charnfering, and one set for hitting or removing the burr from the boot sole or Welt near the upper and from the heel seat or rand.

A is the spindle of the paring-machine, upon which is screwed the holder or block B for the profile-cutters b.

A is a sleeve, which is free to slide over the profile-cutter holder B, for the purpose of adjusting the breadth of cut of the profile-cutters to suit the work in hand.

I) 1), Figs. 4 and 5, are the profile or peripherical cutters, which are segment-shaped from their front edge to their heel. These cutters. which form a group of six or more, are fitted in rabbets cut in the periphery of the cylindrical block B, so as to give them an eccentric set, and they are held in place by means of binding-screws. Screwed to the back of this block is a disk B, which receives the sleeve A, fitting it so as to allow of the sleeve sliding freely over the cutter-holder.

Cast in one with the block Bis a hollow center-piece B which is internally threaded to fit onto the spindle A of the paring-Inachine.

Drilled through the block B and disk B at opposite sides of the center piece are holes, which form guides for two parallel guide-rods projecting rearward from a holder 0, to which the chamfering-cutter D is attached. One such guiderod, however, may suffice. These rods also pass through the closed end of the sleeve A, and by means of a binding-screw bearing against one of the rods the holder 0 is, when adjusted, made fast to the sleeve A.

The charnfering-cutter holder 0 consists of a ring turned to fit a recess made in the face of theholder B and slide freely therein.

The chamfering-cutter D is star-shaped, and its limbs form the cutting-blades. These blades will generally correspond in number with the profile-cutters, as shown in the drawings, and to receive these blades there are formed in the front edge of the sleeve A a corresponding number of radial recesses at, their object being to provide for the adj ustment of the sleeve relatively to the blades, and thereby to gage the depth of cut made by the blades.

It will be understood that the cutters b have a profile corresponding to the work to be done, and that the cutters are so mounted 011 their holder that their edges will stand out eccentrically or tangentially and sufficientlyin rear of the heelof the next adjacent cutter to leave ample roomforthe-discharge of chips or shav- IDOS.

Til, Figs. 12 and 13, is the bitting or burr-removing cutter, which serves also as a guide for the work. This cutter, which consists of a ring of steel with inclined cutting-edges e punched up so as to leave the outer periphery of the ring unbroken, is carried by a guard F, mounted loosely on the spindle A. This guard may be described as a hollow cone having arms for connecting it with its hub, such arms being helically disposed, for the purpose to be presently explained. I

Keyed on the spindle A, Fig. 1, is a collar A against which the conical guard abuts, it being held in contact therewith by the adj usting of the cutterholder on its spindle until the cutters I) bear against the ring E. The cutting-edges act the ring E project into the spaces between the profile-cutters b, and as the spindle A is rotated the ring E and conical guard F will be caused to rotate with the cutter-holder B. The chamferingcutter D is conveniently stamped out of one piece of steel, there being, say, six cutting-blades, which enter the six openings between the heel and cutting-edge of the adjacent profile-cutters b of the holder B. These cutting-blades are preferably made tangential and are bent rearward to enable them to make an inclined cut in their revolution, as illustrated in Figs. 3 and 7. The'holder of the cutter D is attached to the sleeve A, as above explained, for the puri pose of enabling the sleeve to slide the chamfering-blades between the heel and edge of the adjacent profile-cutters to suit the various thicknesses of the work in hand. Thus in the dotted position of Fig. 1 the cutter D is I shown as advanced to chamfer the waist of a G, shift the sleeve A and. the chamferingcutter D relatively to the profile-cutters. By this means, therefore, the cutter D may be brought to act upon work of Various thicknesses without arresting the action of the profile-cutters.

The heel of the cutter 1) forms virtually a stop for the work for gaging the depth of cut, and as these cutters are worn away by sharpening the point of support for the work on the back of the cutters will shift rearward in exact proportion to the relative recession of the cutting-edge from the heel of the next adjacent cutter.

A convenient mode of making the cutters 6 is to take a ring of steel of suitable breadth and thickness. and to turn upits outer periphery to correspond to the profile of the edgeparing to be effected, and then to cut up the ring into sections and to reduce the breadth of these sections by filing, so as to obtain the requisite spaces between the cutters for the traverse of the blades of the cutter D as well as the discharge of the chips of leather.

The holder B, to which the segment-shaped cutters are fitted, has a diameter correspond ing to the internal diameter of the ring from which the cutters are formed, and the seats for the cutters are made by planing down the periphery eccentrically, as shown in the detached view, Fig. 5. i

From the foregoing description it will be readily understood how the edge paring and chamt'ering of the soles of boots and shoes maybe simultaneously and accurately eifected by the use of this compound cutter.

The several sets of cutting-edges having been properly adjusted relatively to each other to suit the work in hand, the boot is held up to the cutter, as indicated in Fig. 1, the. edge of the steel ring E being entered into the crease of the boot. Rotary motion having been imparted to the cutter, the edge of the sole will be acted upon by the profile-cutters b and the face of the sole near the edge by the chamfer-ing-cutter D, while the burr at The modified form of profile-cutter illustrated at Figs. 10 and 11 shows that the out ters, instead of formingportions of a ring, may be made with a face straight from edge to heel. This will lessen the amount of contact between the cutters and the work, and thereby reduce the tendency of the cutters to heat. An incidental advantage of this modification is that the number of blades may be increased. Thus the figures show twelve blades in place of the six in Figs. 1 and 2.

Having now particularly described and as certained the nature of our said invention and in what manner the same is to be per.- formed, we declare that what we claim is- 1. The combination, in a compound cutter for paring boot or shoe soles, of a profilecutter holder fitted with spaced blades, a chamfering-cutter holder, a chamfering cutlter carried thereby, the blades of which are capable of sliding between the spaced blades said sleeve fitting and being capable of sliding upon the profile-cutter for the purpose of adter carried thereby, the blades of which are capable of sliding between the spaced blades of the profile-cutter, abitting-cutter, a hollow exhaust-holder to which said bittin g-cutter is secured and which acts as a guide, a sleeve to which the chamfering-cutter is connected adj ustably, said sleeve fitting and being capable of sliding upon the profile-cutter for the purpose of adjusting the chainfering-cutt-er to the profile-cutter to suit the work in hand, and a spindle to which the profile-cutter is secured and upon which the hitting-cutter holder is frictionally held, all the said cutters being rotated by the said spindle, substantially as and for the purpose above set forth. 3. In compound rotary cutters for boot or shoe paring machines, the combination of the chamfering-cutt-er holder 0, the cutter D secured thereto, an adjustable sleeve A ,in which the cutter-holder O is 'suppported, the sleeve A having radial recesses a to receive the blades of the cutter D, means for adjusting the said cutter-holder relatively to the sleeve, and a rotary spindle to actuate the parts, substantially as herein described.

JOHN KEATS. O. H. KEATS. WVitnesses to the signature of John Keats:

J AS. F. LABORDE, H. K. WHITE. Vitnesses to the signature of O. H. Keats: J. ARMYTAGE BATLEY, JOSEPH R. ROGERS. 

